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Professor Puzzler's Statistics Calculator

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IQR Detailed analysisAverageMedianModeRangeOutliersStandard deviationHarmonic meanGeometric meanQuartilesVariance

InterQuartile Range (IQR)

Please enter data above to calculate the interquartile range.


The interquartile range (IQR) is very similar to the range in that it is a difference between an upper and lower value. It is different than the range, however, because the IQR is not the range of the entire data set. Instead, it is the difference between the first quartile value and the third quartile value.

The interquartile range is used in calculating outliers

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